Hydrocarbon motor



Qct. 13, 1925.

L. M. WOOLSON HYDROCARBON MOTOR Filed Dec. 17, 1919 Patented Oct. 13, 1925.

UNITED STATES PATENT OFFICE.

LIONEL M. WOOLSON, OF DETROIT, MICHIGAN, ASSIGNOR TO PACKARD MOTOR 'CAR GOMIANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

HYDROCARBON moron.

Application filed December 17, 1919. Serial No. 345,586.

To all whom it may concern:

Be it known that I, LIONEL M. lVoonsoN, a citizen of the United States, and resident of Detroit, Wayne County, State of Michigan, have invented certain new and useful Improvements in Hydrocarbon Motors, of which the following is a specification.

This invention relates to hydrocarbon motors and more particularly to carburetors for hydrocarbon motors and control mechanisms therefor.

When the throttle valve of a hydrocarbon motor is suddenly opened to speed up or accelerate the motor there is created a strong suction in the mixing chamber of the carburetor and a large volume of air is quickly drawn into the carburetor through the air intakes, but due to the fact that it takes an appreciable length of time to overcome the inertia of the gasoline in the fuel nozzle the mixture sucked into the intake manifold is weak or thin.

The present invention has for its object.

to overcome the inertia of the gasoline under these conditions and to increase the flow of fuel to the carburetor of a hydrocarbon motor thereby insuring a llCh enough mixture upon the sudden opening of the throttle.

Another object 1s to provide means automatically operable upon the opening of the throttle for increasing the flow of fuel to the carburetor,

Another object is to utilize the pressure in the exhaust manifold of a hydrocarbon motor to overcome the inertia of the asoline and increase the flow of fuel to t 0 carburetor.

Another object is to provide pressure regulating means between the exhaust manifold of a hydrocarbon motor and the carburetor whereby the increased flow of gasoline to the carburetor is effected only upon the opening of the throttle and is not continued during the operation of the motor at high speed.

Further objects will appear as the descri tion proceeds.

T e mechanism by means of which the above objects are carried out comprises briefl a connection between the exhaust mani old of a h drocarbon motor and the float chamber 0 the carburetor for communicating the excess pressure in the manifold, due to the opening of the throttle, to

the float chamber, thereby causing an increased flow of fuel through the nozzle of the carburetor and enriching the mixture passing to the intake manifold of the motor.

One embodiment of the invention has been illustrated in the accompanying drawings, and in these drawings:

Fig. 1 is a view in elevation showing my improved carburetor controlling mechanism in connection with a hydrocarbon motor, the controlling mechanism and carburetor being shown in section; and

Fig. 2 is an enlarged detail view illustrating in section the construction of the pressure regulating valve.

As shown in the drawings, the carburetor 10 is provided with the usual air intake 11 and the float chamber 12 having a conduit 13 leading to the fuel nozzle 14 which is positioned within the Venturi tube 15. A throttle valve 15' is positioned above the mixing chamber and between the mixing chamber and the intake manifold 16 of a hydrocarbon motor 17 the valve being operated in the usual manner by an arm 16' and link 17 The motor 17 is rovided with an exhaust manifold 18, w ich may be of any ordinary construction.

As stated above, when the throttle valve 11 is opened, a strong suction is created in the mixing chamber of the carburetor and an increased amount of air is immediately sucked into the carburetor. In order to insurea proper mixture, means must be provided for correspondingly increasing the flow of gasoline through the fuel nozzle 14 and in t e present instance this means consists of a conduit 19 which is connected with .theexhaustmanifold 18 of the motor and leads to a pressure regulating valve 20, a conduit 21, in turn, leading from the valve 20 to the float chamber 12. The conduit 19 preferably projects into the exhaust stream inthe pipe 18 and has its inlet opening directed towards the stream so that the pressure will be quickly carried into the conduit. It should be understood that the conduits 19 and 21 may be directly connected together thereby forming a direct passage between the exhaust manifold and the float chamber of the carburetor, but in order to prevent the continued increase of fuel supply to the carburetor after the motor has been speeded up and is running at high with a pair of chambers 22 and 23, the conhas been interposed between the conduits 19 and 21. This pressure regulator is provided duit 19 bein connected'with the chamber 22 and the con uit 21 being connected with the chamber 23. Between the chambers 22 and 23 there is interposed a valve 24 which is connected at its upper end to a diaphragm 25, a spring 26 exerting a downward pressure on the diaphragm and being disposed between the diaphragm and an adjustable nut 27. By adjusting the nut 27 to different positions the normal pressure exerted upon the diaphragm by the spring, and, therefore, the position of the valve 24 may be regulated.

The operation of the above described mechanism may be briefly explained as follows:

When the throttle valve 15 is suddenly opened, a strong suction is created in the mixing chamber of the carburetor, thereby causing, an inrush of air and an increased mixture passing into the intake manifold of the motor. This increased mixture after the explosion of the motor will cause an increased pressure in the exhaust manifold and this pressure is communicated through the conduit 19, valve-2O and conduit 21 tothe float chamber 12 of the carburetor. This will result in an increased pressure upon the gasoline passing into the carburetor and'this lncreased pressure causes an increased flow of gasoline through the conduit 13 v, to the nozzle 14, thereby enriching the mixture.

. After the motor has been speeded up and the pressure in the exhaust manifold is further increased this pressure will automatically substantially close the valve 24, thereby preventing a'continued increase of fuel supplied to the carburetor. the point at which the valve 24 will function by the increased pressure in v the exhaust mani2f7old may be regulated by means of the nut a While I have in the above specification described one specific embodiment of my invention, itshould be understood that the invention is capable of modification and that modifications and changes may be made in the construction and in the arrangement of the cooperating parts without departing from the s irit or scope of the invention, as ex ressed 1n the following claims,

aving thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In combination, a hydrocarbon motor having an intake manifold and an exhaust manifold, a carburetor communicating with said intake manifold and havin a float chamber and a fuel inlet leading om said float chamber to said carburetor and means connecting said exhaust manifold and said As above stated,

' manifold, a carburetor havin egumes float chamber and comprising a through conduit controlled by thepressure in said exhaust manifold for increasing the flow of fuel in said fuel inlet.

2. In combination, a hydrocarbon motor having an intake manifold and an exhaust manifold, a carburetor communicating with said intake manifold and having a float .chamber and a fuel inlet leading from said float chamber to said carburetor, through conduit means connecting said exhaust manifold and said float chamber and controlled by the pressure in said exhaust manifold for increasing the flow of fuel in said fuel inlet and means for regulating said last named means.

3. In combination, a hydrocarbon motor having an intake manifold and an exhaust manifold, a carburetor communicating with said intake manifold and having a throttle valve, a mixing chamber, a float chamber and a fuel inlet leadin from said float chamber to said mixing 0 amber and a conduit leading from said exhaust manifold to said float chamber for communicating the pressure in said exhaust manifold to said float chamber.

4. In combination, a hydrocarbon motor having an intake manifold and an exhaust manifold, a carburetor communicating with said intake manifold and having a throttle valve, a mixing chamber, a float chamber and a fuel inlet leading from said float chamber to said mixing chamber, av conduit connecting said exhaust manifold with said float chamber for communicating the pressure in said exhaust manifold to said float chamber and a regulating valve in said conduit.

5. In combination, a hydrocarbon motor having an intake manifold and an exhaust manifold, a carburetor communicating'with said intake manifold and having a throttle valve, a mixing chamber, a float chamber and a fuel inlet leadin from "said float chamber to said mixing 0 amber, a conduit connecting-said exhaust manifold with said float chamber for communicating the pressure in said exhaust manifold to said float chamber and a regulating valve in said conduit having means 0 erable upon predetermined pressure in said exhaust manifold to move said valve and substantially interrupt the communication between sald exhaust manifold and said float chamber.

6. In combination, ahydrocarbon motor having an intake manifold and an exhaust a throttle valve and a fuel inlet, a condu1t connecting said exhaust manifold of said motor with the fuel line of said carburetor for com municating the pressure in said exhaust manifold to said fuel line and means disposed in said conduit for automatically decreasing thecommunication between said exhaust manifold and said carburetor upon a predetermined pressure in said exhaust manifold,

7 In combination, a hydrocarbon motor having an intake manifold and an exhaust manifold a carburetor-communicating with said intake manifold and having'a throttle valve and a fuel inlet, a conduit connected to said exhaust manifold and adapted to communicate the pressure in said exhaust manifold to the fuel inlet of said carburetor and regulating means in said conduit responsive to the variations in pressure in said exhaust manifold.

8. In combination, a hydrocarbon motor having an intake manifold and an exhaust manifold, a carburetor communicating with said intake manifold and havin a float chamber, a conduit connecting sai exhaust manifold and said float chamber and a pressure regulator, said pressure regulator having a valve normally disposed in open position but adapted upon a predetermined increase in pressure to substantially close said conduit. 9. In combination, a hydrocarbon motor having an intake manifold and an exhaust manifold, a carburetor communicating with said intake manifold and having a fuel inlet, means connecting said exhaust manifold and said fuel inlet and adapted to communicate the pressure in said exhaust manifold to said fuel inlet and adjustable means automatically operable upon a predetermined pressure in said exhaust manifold to substantially interrupt the communication between said exhaust manifold and said fuel inlet.

In testimony whereof I afiix my signature.

LIONEL M. WOOLSON. 

